using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Dictionary<int, string> myDictionary = new Dictionary<int, string>();

​

        myDictionary.Add(3, "about");

        myDictionary.Add(1, "who");

        myDictionary.Add(4, "order");

        myDictionary.Add(2, "cares");

        Console.WriteLine("standard dictionary:");

​

        foreach (KeyValuePair<int, string> kvp in myDictionary)

        {

            Console.WriteLine("Key = {0}, Value = {1}",

                              kvp.Key, kvp.Value);

        }

        Console.WriteLine();

​

        SortedDictionary<int, string> mySortedDictionary = new SortedDictionary<int, string>();

​

        mySortedDictionary.Add(3, "about");

        mySortedDictionary.Add(1, "who");

        mySortedDictionary.Add(4, "order");

        mySortedDictionary.Add(2, "cares");

        Console.WriteLine("sorted dictionary:");

​

        foreach (KeyValuePair<int, string> kvp in mySortedDictionary)

        {

            Console.WriteLine("Key = {0}, Value = {1}",

                              kvp.Key, kvp.Value);

        }

    }

}